We'll need to cover a bit of ground here.
Do we want to include the half-dragon rules? Do we want to add a sample dragon at some age category?
References to Attack/Defense modes need to be deleted.
Psi-like Abilities (Sp): 3/day - astral projection (ancient or older), plane shift (great wyrm), psionic charm (adult or older), psionic levitate (juveline or older), psionic suggestion (very young or older), read thoughts (old or older).
The brainstealer dragon receives augmentations for its psi-like abilities normally as it ages. It prefers to broaden the potential targets first, then increase the number of potential targets, and then increase the durations of its psi-like abilities.
Psionic Powers: A brainstealer dragon manifests powers as if it were a psion with Telepathy as its primary discipline, instead of casting spells as a sorcerer.
Special Attacks: Instead of a breath weapon, a brainstealer half-dragon can use a mind blast cone once per day. This cone is 30 feet long and stuns those caught in the cone for 1d4+3 rounds. A successful Will save (DC 10 + 1/2 half-dragon’s racial HD + half-dragon’s Cha modifier) negates the stunning.